Fieldpiece LT17 User manual

DIGITAL
MULTIMETER
Model LT17
OPERATOR'S MANUAL
General Specifications
Auto-off: turns meter off after approx. 50 minutes
to extend battery life.
Indicators: Continuity beeper (<100W). Low
battery. Overrange "OL" is displayed.
Environmental: Operating temperature 32°F to
122°F, storage 0°F to 140°F with batteries
removed, RH<70%.
Measurement rate: 2.5 times/sec nominal.
Battery life: >200 hours typical with carbon zinc.
Battery type: 9V NEDA 1604 type
unctional Specifications
Accuracy specifications @ 74°F±8°F, relative
humidity less than 70%. Accuracy specified as
±% of reading ± number of least significant
digits.
DC Voltage
Ranges: 200mV, 2000mV, 20V, 200V, 600V.
Resolution: 100µV
Accuracy: ±(0.5%rdg + 1dgts)
Input impedence: 10MW
AC Voltage (50Hz-500Hz)
Ranges: 200mV, 2000mV, 200V, 600V.
Resolution: 100µV
Accuracy: 200mv, 200mV range ±(1.2% + 4)
200V, 600V range ±(2% rdg + 4dgts)
Input impedence: 10MW
Limited Warranty
This meter is warranted against defects in
material or workmanship for one year from
date of purchase. Fieldpiece will replace or
repair the defective unit, at its option, subject
to verification of the defect.
This warranty does not apply to defects
resulting from abuse, neglect, accident,
unauthorized repair, alteration, or
unreasonable use of the instrument.
ANY IMPLIED WARRANTIES ARISING
OUT OF THE SALE OF A FIELDPIECE
INSTRUMENTS PRODUCT, INCLUDING
BUT NOT LIMITED TO IMPLIED
WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR
PURPOSE, ARE LIMITED TO THE ABOVE.
FIELDPIECE SHALL NOT BE LIABLE FOR
LOSS OF USE OF THE INSTRUMENT OR
OTHER INCIDENTAL OR
CONSEQUENTIAL DAMAGES, EXPENSES,
OR ECONOMIC LOSS, OR FOR ANY
CLAIM FOR SUCH DAMAGE, EXPENSES,
OR ECONOMIC LOSS.
State laws vary. The above limitations or
exclusions may not apply to you. This
warranty gives you specific legal rights, and
you may also have other rights which vary
from state to state.
General Description
The LT17 measures temperature
(ambient air as well as pipes), capacitance
(motor start and motor run capacitors),
microamps (flame rectifier diode circuit), and
frequency (variable frequency motor
controls). In addition it measures volts
(AC&DC), resistance and has a continuity
beeper and diode check. The LT17 works
with all Fieldpiece accessories, when
connected with our deluxe test leads (ADL2).
or Your Safety...
Inspect the test leads for damage to the
insulation or exposed metal. Replace if
suspect. Never ground yourself when taking
electrical measurements. Do not touch
exposed metal pipes, outlets, fixtures, etc.,
which might be at ground potential. Keep
your body isolated from ground by using dry
clothing, rubber shoes, rubber mats, or any
approved insulating material. When
disconnecting from a circuit, disconnect the
"RED" lead first, then the common lead.
Work with others. Use one hand for testing.
Turn off power to the circuit under test before
cutting, unsoldering, or breaking the circuit.
Keep your fingers behind the finger guards
on the probes.
All voltage ranges will withstand up to
600VDC or 600VAC. Do not exceed 600VAC/
DC.
Disconnect the meter from the circuit
before turning any inductor off, including
motors, transformers, and solenoids. High
voltage transients can damage the meter
beyond repair. Do not use during electrical
storms.
Capacitance
Ranges: 200mF, 2KmF, 20KmF
Accuracy: ±(4% rdg + 10 dgts)
Test Voltage: <3.5V
Test Frequency: 21Hz
AC Current
Ranges: 200µA, 20mA
Resolution: 100nA
Accuracy: ±(1.5% rdg + 1dgts)
Voltage urden: 250mV for 200µA range.
400mV for 20mA range.
DC Current:
Ranges: 200µA, 20mA
Resolution: 100nA
Accuracy: ±(1.0% rdg + 1 dgts)
Voltage urden: 250mV for 200µA range.
400mV for 20mA range.
Resistance (Ohms)
Ranges: 200W, 200KW, 20MW
Resolution: 0.1W
Accuracy: 200W, 200KW ranges
±(1.0% rdg + 4 dgts)
20MW range ±(2.0% rdg + 4 dgts)
Open circuit voltage: 0.3V (3V on 200W )
Continuity
Audi le indication: less than 100W
Response time: 100ms
requency (auto ranging)
Range: 10Hz to 40KHz
Sensitivity: 3.5VRMS min.
Accuracy: ±(0.1% rdg + 3 dgts)
Diode test
Resolution: 1mV
Accuracy: ±(1.5% rdg + 1 dgt)
Test current: 1.0mA ± 0.6mA
Open circuit voltage: 3.0V typical
Overload Protection
VAC + VDC 200mV range 500VDC / 350VAC
for 15 sec
>200mV range 600VDC / 600VAC
AAC + ADC 0.5A / 500V
mA input (6.35mmx32mm)
mA input model RFM74
Capacitance 0.1A / 250V
(5mmx20mm)
model RF16
Ohms (W) 500VDC / 500VAC
Diode 500VDC / 500VAC
Continuity 500VDC / 500VAC
Temperature 30 VAC, 60 VDC
Battery Replacement
The multimeter displays   to indicate
that the battery needs a replacement to
maintain proper operation.
Temperature (K-type T/C)
Range: -30°F to 1000°F Resolution 0.1°F
Accuracy: ±(1°F), 32°F to 120°F;
±(1%+1.5°F), -4°F to 750°F; ±(2%+3°F),
-30°F to -4°F & 750°F to 1000°F. ±(1°C),
0°C to 120°C; ±(1%+1°C),
0°F to 400°F; ±(2%+3°C), -
35°C to -0°C & 400°C to
600°C.
Ice bucket calibration
For accuracies of ± 1°F
(32°F to 120°F) calibrate the
LT17 to a known temperature.
A glass of stabilized ice water is
very close to 32°F and is
usually very convenient.
1. Remove back of the meter. Hold the
battery in place with a rubber band.
2. Stabilize a large cup of ice water.
3. Select the °F range on the LT17.
4. Immerse the probe and let it stabilize.
5. Adjust VR2 until the read out is within 2°F
of the specified 32°F. Then adjust VR3
until the meter reads within 0.1°F of 32°F.
Display oC or o
1. Locate the pins above/right of VR3.
2. Short (jumper) pins to display oC.
DO NOT APPLY VOLTAGE TO THE
CAPACITANCE JACK OR THE
CURRENT JACK. Even low voltages
can cause a current overload and blow
a fuse. Replace blown fuse to regain
function.
Disconnect the thermocouple when
measuring voltage.
DISCONNECT TEST LEADS WHEN
MEASURING TEMPERATURE.
!
WARNINGS
VR2
VR3
VR1

How To Use Your Multimeter
Optional Accessory Heads
Fieldpiece accessory heads convert a
parameter into a millivolt signal. For example,
the ATH3 converts one °F into one millivolt DC.
Set the multimeter to read millivolts DC. Any
digital multimeter with a mVDC range and
industry standard jacks can be used with
Fieldpiece accessories. The only exception is
the ACH current clamp which requires the
meter to be set to read AC millivolts.
Use Fieldpiece deluxe test leads (model
ADL2) or the Fieldpiece handle/adaptor (model
AHDL1) to connect any head to a DMM.
Selecting Ranges
For all ranges and functions choose a range just above the value you expect. If display reads "OL"
(overload), select a higher range. If display shows less than three numbers, select a lower range for
better resolution.
Select AC or DC volts and amps ranges as appropriate.
Voltage
requency
Capacitance Resistance
There are two ways to measure current using the LT17. To safely measure high currents, use the
Fieldpiece ACH, (or any other current clamp which converts amps to millivolts). To measure
microamps or milliamps, use the com jack and the jack on the lower left labeled mA. Do not
attempt to measure currents over 20mA.
AC Current with ACH
Current Through the Meter
Temperature
Insure the temperature being measured is
stable. Maintain good contact between the
thermocouple and what's being measured. Set
the meter on the 200OF or 1000OF settings for
0.1OF or 1OF resolution respectively. DO NOT
CONNECT to voltage over 30VDC or 42V P-P.
Discharge
OpmnLT17v20NA
REMOVE THE THERMOCOUPLE WHEN
TAKING VOLTAGE MEASUREMENTS.
DISCONNECT THE TEST LEADS WHEN
TAKING TEMPERATURE MEASURE-
MENTS.
!
WARNINGS
Obtaining service
Send the meter freight prepaid to
Fieldpiece Instruments. For warranty service
also send proof of date and location of
purchase. For out-of-warranty service send
$40, check or money order. The meter will
be repaired or replaced, at the option of
Fieldpiece, and returned to you via least cost
transportation.
User Maintenance
All repairs must be performed by a
factory service center.
Fieldpiece Instruments, Inc.
580 West Central Ave. Suite A
Brea, CA 92821
Phone [phone] Fax [phone]
www.fieldpiece.com
Remove
test
leads
DC
AC
40
FUSED
20mA
MAX
FUSED
DATA HOLD
MAX HOLD
MICRO AMPS
CAPACITANCE
TEMPERATURE
V AC
200m
2000m
200 600
OFF
600
20
2000m
200m
V DC
200µ
A
20m
20m
200µ
A
KHz
20M
200
200k
W
750
200
30V
F
TYPE K
O
!
MAX
MFD
200 20
2k
20k
VW
MAX
600V
!
350V/15
SEC FOR
200mV
RANGE
MFD
COM